JJJ's Blog

Category: Software

  • 19 Lessons

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    Every good work of software starts by scratching a developer’s personal itch. Good programmers know what to write. Great ones know what to rewrite (and reuse). Plan to throw one [version] away; you will, anyhow (copied from Frederick Brooks’s The Mythical Man-Month). If you have the right attitude, interesting problems will find you. When you lose…

  • PHP is not recommended

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    The latest version of macOS makes it pretty clear how Apple feels about open web technologies that aren’t JavaScript:

  • Raspberry Pi 4, Ubuntu 20.04, PoE Hat Fan Control

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    I recently acquired an 8Gb Raspberry Pi 4 and promptly installed Ubuntu 20.04 on it to see how it worked. Right away, I was excited that the PoE Hat worked and that it booted without any problems, except that the fan on the Hat was no longer controllable the way that it used to be.…

  • macOS Disk Utility “Operation cancelled”

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    When trying to use Disk Utility to make a backup of one of my Raspberry Pi’s, I was repeatedly seeing an error that was causing my backup to fail. Operation cancelled Disk Utility Not particularly helpful. For me, the fix involved setting the Disk Utility application to have Full Disk Access inside macOS System Preferences,…

  • Update GitLab signing key

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    At the beginning of April, GitLab updated their repository signing key. If you try to update, you will see an error during sudo apt update : W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: https://packages.gitlab.com/gitlab/gitlab-ee/ubuntu bionic InRelease: The following signatures…

  • Easy PHP Upgrade

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    I had a few servers that needed upgrading from PHP7.2 to 7.3, so I wrote this little single-line command to help simply things. It uses apt list to get the PHP modules that are currently installed with 7.2, and passes them through to apt install for 7.3. This can easily be modified for any PHP…

  • Empty Space in macOS Dock

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  • Variable SSL certificate directives in nginx (part 2)

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    Feeling encouraged by my friend Jeremy Felt’s blog post on the subject, I thought I may finally be able to achieve the panacea of WordPress Multi-Network SSL configurations:

  • Install nginx from source

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    At the time of this writing, the latest stable version of nginx is 1.16.0, and none of the package managers have updated themselves to include it. Before you get started, you’ll want to be logged in to an open terminal session with a user that has sudo access. The reason for this, is because nginx…

  • Wi-Fi Calling – macOS

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    This glitchy bit of UI shows up after enabling WiFi calling on an iPhone.